I am not trying to be snarky, and honestly don't know what you mean. Does "In order of importance" mean "from most to least important", or "from least to most

I am not trying to be snarky, and honestly don't know what you mean. Does "In order of importance" mean "from most to least important", or "from least to most important"? (Probably it's just my deficiency; I am so used to seeing 'increasing' or 'decreasing' that I don't know which one is implicitly meant.)